What is it?It is a part of a larger sentence. It’s another way to express information that is not know.

Does she like to read? = I wonder if she likes to read.

What’s this book about? = I wonder what this book is about.

When was it written? = Do you know when it was written?

Embedded QuestionsYes/No questions can start with If or Whether.

Does he like the book? = I don’t know if he likes the book.

Auxiliary verbs are not use in embedded questions.

Where did you buy it?

Can you tell me where you bought it?

Can you tell me where did you buy it?

Embedded information questions

Start with a Wh-question word.

Where is Lucy?

Can you tell me where Lucy is?

Who is the author?

Do you know who the author is?

Do you know who is the author?

Could you tell me...?Do you know if...?I wonder....